An overnight bus to Hampi from Mumbai, reaches Hospet by 9:30-10:00 am.
Hospet to Hampi approx. 15 kms (30 minutes). Check-in your hotel (if you are staying in city centre) by 11:00. (check in time at most of these places is 9-9:30am.) Ask for a transfer by the hotel, they will be happy to arrange.
Take it easy on day 1, do local relaxed walks. Expected to start day at 1:30pm